Platen-roller release.



R. M. MOSHER.

PLATEN ROLLER RELEASE.

APPLICATION FILED JAN.26, 1914.

Lmmm v Patented-July 21,1914.

' WZA LQ By mom/ g Mm 'mzi, a citizen e1 il'ie Uni S ssies,

siding; Dilleii, in the I W i .2 HF,- A, J need end Slate Montana, have mveilee; new useml semi/el ments in Fleein Kelley Releases, epeeifieebien. My invenlzien relates to ple'lzen re leases, for use ll'i cenneclcion wifilz p e vin'g machines and anelegeus semcinzres my mere pertieuler purpose being fie previcle (if which tile indie-wine is releasing mechanism, simple in ca! uefimn ei lcl peelllve' m echo-:2,a en img llie opemor to release em piziien rel Oifiillif Words, renclez it ifgee of .nisiii" ordinarily used for eciueiza enabling tile pimen iOiiGl to be of was clirec iens, iml mechanism imacluating; iv (luring 'zkiie eml epei' t'ien 0f the meeliiiiae. Tfere'nee is made Eh; (irewings forming"- a lie-n, which like letters in pa 13' PM 1 is a herizonfial section tl'zmugh file platen roller and parts immediately seeiz tedb-herewith, as used upen e type manufacture-(l my Smith-ix 62 Bros. Typewriter: (30., shewmy device as applied Fig. 2 is'e perspeetive of the lever used for actuav ing-the releasing mechanism.-

3 an elevatienof the barrel carried. by the platen roller and forming," a part of L lle releasing meehmrism. Fig; l'is esection threugli the roller" shaft and showing a stop collar mmmlseilupon szlicl shaft. Sis e sectier! 0n the line ef 1, looking iii'tlie lireceien af'the arrow. 6 is fmgm'enzuy section, 011 the line 6-4; of Fig: 5; lacking in the direction of the ari'ew;

Carriage membersai-e shown at 7,8, aml jemn aleol inthese members is the platen shaftQ. ll1e platen roller is shown 10, and be made of Wood, rubber or ether'su'imble' maierial. This roller is preidecl'acljecent to ene 01? its ends with a W Cylindrical compartment and siizlably mounaerl Within this comparement is a barrellimade-ofmeta-l, preferably steel, This bllTi'Ei is provideii'et one 0i. igs encis within all mwardij extending annular heed 1525 and mlgeceneite other prev mm H re Qei eupperleel' upon theleeter'is ell; e. exemeilfy as will if; prefei're h A step col and issecured 5" extends threngli 'imle Afietiier stop cellar 23 1s meunae ripen the platen simfiz These step Collars ll miniature bracket i the cairiage member 8 y a b pro'vided Willie, pair of eyes 2 3. ing through blieee eyes is a pin 2'? 1 iii-ally mounted upozz' this nn is a lever 'wliiel'l 1s lees/e between 26. This Wel ing lever is z rm; 7 tee 29, which 5101' 181 23 engeg'es' beed A level" is; prevife'cl'wiih at l 31., and e lafiemlly amending 39, die latler pmvide-cl 33. A pin exlends hmugli supports -iie le /e339.

The carriage member 8 is previlecl a thickened poriion 86,-sm'd wifili'cep per time and 37. The carriage member 8 this eye and is furthez? previded Wiijh e lug 3E below 21151 in close pmizimiiy "be the lever 30, ancl miapied w fer the same. 38 wliieh is previclecl with e. 36*, as

serve limiiing; siege 'Efhe lev a miles eslanting feee Fig. 2-

l z 1 ,1" 1 'i ie barrel 11;;

em longiimfiinai travel 0f the platen ell causes this lever to rock, so that the toe 29,

little distance in the general direction of the length of the platen shaft to the right according to Fig. l.

A spiral spring 39 is located within the barrel 11, and presses in opposite directions against the annular bead 12, carried by the barrel, and the collar 20, carried by the platen shaft 9. This spring, by its tension, presses the barrel 11 to the left according to Fig. 1, and thus has a tendency to force the clamping flange l8jagainst the annular rack 19, and also to force this annular rack tightly against the end plate 16 carried by the platen roller. Therefore the tension of the spring 39 normally holds the annular rack 19 rigid relatively to the platen roller.

When, however, the lever 30 is turned by hand in aclock-wise direction according to Fig. .5, or in other words the operator using the machine presses the thumb-piece 31 away from her, the spring 39 is compressed slightly, the barrel 11 is moved a trifle in the general direction of its own length, and the annular rack 19 is disengaged from the platen roller, yet is not materially disturbed as to its general position.

' The operation of my device is as follows: The parts being assembled and arranged, as above described, the platen 'oller and annular rack 19 are normally actuated as usual or customary in this art. If, however, the operator desires to turn the platen roller backward to any desired extent, or to turn it forward'to an extent less, than it generally moves in rotating a single step of its travel, the operator merely places her thumb upon the thumb-piece 31 and presses the same as above described. The lever 30 being thus swung upon its mounting, the lug 30 actuates the rocking lever 28 and virtually locks the same in the position which it thus assumes. 39 is practically looked under compression so that the annular ratchet 10 remains free, even after the operator removes her thumb from the thumb-piece 31, The movable parts associated with the platen roller remain in the respective positions into which they are thus brought, and are only restored to their respective normal positions by a reverse movement of the lever 30'. The mechanism above described, enables the typewriting paper to be so shifted that the writing may be placed anywhere upon it, independently of the spacing ordinarily done by the machine, and also enables the same sheet of paper to have typewritten characters placed up0n it regardless of the positions of other typewritten characters placed upon it before. Again, the wear of the movable types upon the platen roller is distributed to much better advantage, be-

In doing this, the spring cause, in using my device, the type letters do, not strike repeatedly in the same position upon the platen roller.

I donot limit myself to the precise construction shown, as variations may be made therein without departing from the spirit of my,invention. Neither do I limit my apparatus to use upon a particular type of machine, as the construction may be varied to adapt it for service upon typewriting machines of various kinds, and uponmechanism other than typewriting machines.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1. In a platen roller release, the combination of a platen roller, an annular ratchet for turning the same, said ratchet being normall y loose relatively to said platen roller, a barrel carried by said platen roller and provided. with a clamping flange for engag ing said annular ratchet, and forcing the latter into operative engagement with said platen roller, a rocking lever engaging said barrel, and an actuating lever provided with a lug for engaging said rocking lever in order to shift the position of said rocking lever.

2. In a platen roller release, the combination of a platen roller provided adjacent, to one of its ends with a compartment, a iar-rel extending into said compartment and loose relatively to said platen roller, a spring located within said barrel, for the purpose of moving said barrel relatively to said roller, a clamping flange carried by said barrel and having a general annularl form, an annular ratchet loosely encircling said barrel and located between said annular flange and said platen roller, for the purpose of turning said platen roller, an annular bead carried by said barrel, a rocking lever engaging said annular bead, and an actuating lever movable by hand and provided with a lug for engaging said rocking lever.

3. In a platen roller release, the combination of a platen roller, a rack for turning the same, a barrel carried by said platen roller and movable, relatively thereto, a spring for shifting said platen roller relatively to said barrel, a clamping flange carried by said barrel and adapted, upon move ments of said barrel, to press said ratchet against said platen roller, a rocking lever in operative engagement with said barrel for the purpose of shifting said barrel relatively to said roller in order to disconnect said rack from said platen roller, and means controllable at the will of the operator for locking said rocking lever in a number of predetermined relative positions.

l. A device of the character described, comprising carriage} members, a shaft mounted thereupon, a platen roller mounted upon said shaft and provided with a substantially cylindrical compartment, an end plate mounted upon said platen roller and disposed adjacent said compartment, said end plate being provided with a journal neck,'an annular rack engaging said end plate and encircling said journal neck for the purpose of turning said roller when clamped against said end plate, abarrel extending into said compartment and provided with a clamping flange for engaging said annular rack, a rocking lever for engaging said barrel and drawing the same slightly out of said compartment, means for normally holding said barrel at the limit of its travel within said compartment, a rocking lever engaging said barrel for the purpose of drawin it slightly outward from said barrel and t ereby compressing said spring, and mechanism controllable at the will of the operator for locking said rocking lever in a number of predetermined positions.

5. A device of the character described, comprising a platen roller, an annular ratchet disposed adjacent one end of said roller and adapted to turn said roller by frictional engagement therewith, a clamping flange for pressing said annular ratchet toward said roller and thereby enabling said ratchet to turn said roller, means including a rocking lever for shifting said flange relatively to said annular rack, and an actuating lever disposed adjacent said rocking lever and provided with a lug for engaging said rocking lever, said lug having a slanting face, said actuating leverbeing under control at the will of the operator.

6. In a platen roller release, the combination of a platen roller, an annular ratchet for turning the platen roller and adapted to engage one end of the latter, a barrel carried .by the platen roller and movable relative thereto, the barrel 'havinlg a clamping flange for engaging the anni ar ratchet, a spring acting on said barrel and tending to force the clampin flange against the annular ratchet and t e latter against the said end of the platen roller, and means for moving the barrel against the tension of the spring to disengage the clamping flange from the annular ratchet and free the latter from clamping engagement with the platen roller.

7. In a platen roller release, the combination of a platen roller provided with an end plate, an annular ratchet engaging said end plate and adapted to turn the platen roller,

a barrel carried by said platen roller and movable relative thereto, the barrel being provided with a clamping flange for engaging the annular ratchet, a spring for moving said barrel in one direction and tending to force the clamping flange against the annular ratchet and also to force the ratchet against the end plate of the platen roller, arocking lever engagin" said barrel, and an actuating lever provided with a lug for engaging the rocking lever to shift the position of said rocking lever.

8. A device of the character described, comprising a platen roller provided with a compartment in one end, an end plate on said end of the platen roller and having a journal neck, an annular ratchet engaging said end plate and mounted loosely on the journal neck, a barrel extending through the end plate and into the said com artmen't, and provided with a clamping ange for engaging said annular ratchet, a spring for pressing. said barrel inward 1n the compartment to cause the clamping flange topress the annular ratchet against the said end plate, and a lever mechanism for moving the said barrel slightly outward to free the annular ratchet from operative engagement with the end plate of the platen roller.

ROBERT MARCIUS MOSHER. Witnesses:

RICHARD R. PRICE, 'I'ELIZABETH PRICE. 

